Frequency of a pressure vs time chart

[emc2566]

1. What is the frequency and wavelength of the sound wave that produced the graph?



2. How would you find the wavelength of the graph?



3. I used speed = wavelength x frequency, changed it into frequency = speed / wavelength, used 343 m/s as the speed. I'm just stuck on how to get the wavelength. The units used in the graph are pascals and seconds.

 

[Redbelly98]

Welcome to PF.

Does the graph resemble a sine or cosine function? Try finding the period, from that you can calculate the frequency.

 

[emc2566]

It's a wavelength graph. No sine or cosine functions, no triangles.